Apart from its accounting troubles and a weak online future at its AOL division, the company is feeling a pinch from its usually successful Warner Bros. studio.

Warner isn’t getting much bang for all the big bucks it spends on pricey stars such as Sandra Bullock, Robert DiNiro and Eddie Murphy, who get $20 million and up for a picture.

Their latest flicks from the studio have bombed, such as Murphy’s “Adventures of Pluto Nash,” which cost more than $100 million but took in just $4 million at the box office.

A string of 13 star-driven duds is making studio brass more nervous than usual, says the Los Angles Times.

Arnold Schwarzenegger’s big-budget bomb “Collateral Damage,” took in just $40 million and Clint Eastwood’s “Blood Work” produced only $28 million.

President and COO Alan Horn said the star flops are causing the studio to be more cautious, and more inclined to take on partners. Some question whether big stars are even worth the expense, since many of the biggest hits in the past several years haven’t had big stars.

Through the end of November, six of the 10 films with the highest ticket sales in 2002 had no superstars. They were “Spider-Man,” “Lord of the Rings,” “Star Wars: Episode II,” “My Big Fat Greek Wedding,” “Harry Potter and the Chamber of Secrets,” and “Ice Age.”